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MAX2640, MAX2641
300MHz to 2500MHz SiGe Ultra-Low-Noise Amplifiers


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 160kB)
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Description
The MAX2640/MAX2641 are low-cost, ultra-low-noise amplifiers designed for applications in the cellular, PCS, GPS, and 2.4GHz ISM frequency bands. Operating from a single +2.7V to +5.5V supply, these devices consume only 3.5mA of current while providing a low noise figure, high gain, high input IP3, and an operating frequency range that extends from 300MHz to 2500MHz.

The MAX2640 is optimized for 300MHz to 1500MHz applications, with a typical performance of 15.1dB gain, input IP3 of -10dBm, and a noise figure of 0.9dB at 900MHz. The MAX2641 is optimized for 1400MHz to 2500MHz applications, with a typical performance of 14.4dB gain, an input IP3 of -4dBm, and a noise figure of 1.3dB at 1900MHz.

These devices are internally biased, eliminating the need for external bias resistors and chokes. In a typical application, the only external components needed are a two-element input match, input and output blocking capacitors, and a VCC bypass capacitor.

The MAX2640/MAX2641 are designed on a high-frequency, low-noise, advanced silicon-germanium process and are offered in the space-saving 6-pin SOT23 package.

An evaluation kit is available:  MAX2640EVKIT, MAX2641EVKIT  

Key Features   Applications/Uses
  • Wide Operating Frequency Range
    • MAX2640: 300MHz to 1500MHz
    • MAX2641: 1400MHz to 2500MHz
  • Low Noise Figure
    • MAX2640:
    • 0.9dB at 900MHz
    • MAX2641:
    • 1.2dB at 1575MHz
        1.3dB at 1900MHz
        1.5dB at 2450MHz
  • High Gain
    • MAX2640:
    • 15.1dB at 900MHz
    • MAX2641:
    • 15.7dB at 1575MHz
        14.4dB at 1900MHz
        13.5dB at 2450MHz
  • High Reverse Isolation
    • MAX2640:
    • 40dB at 900MHz
    • MAX2641:
    • 31dB at 1575MHz
        30dB at 1900MHz
        24dB at 2450MHz
  • +2.7V to +5.5V Single-Supply Operation
  • Low 3.5mA Supply Current
  • Ultra-Small SOT23-6 Package

 
  • 400MHz/900MHz/2.4GHz ISM-Band Radios
  • Cellular/PCS Handsets
  • Cordless Phones
  • GPS Receivers
  • Wireless Data
  • Wireless Local Area Networks (WLANs)

    Key Specifications:  Low-Noise Amplifiers
    Part Number RF Freq.
    (MHz)
    RF Freq.
    (MHz)
    Noise Figure
    (dB)
    Gain
    (dB)
    Input IP3
    (dBm)
    ISUPPLY
    (mA)
    Footprint
    (mm x mm)
    Industry Qualified Package/Pins Price
    min max See Notes
    MAX2640  400 1500 0.9 15.1 -10 3.5 2.7 x 2.9
    Automotive - AECQ100
    Automotive - General
    SOT/6
    $0.80 @1k
    MAX2641  1400 2500 1.3 14.4 -4 5.3 Automotive - General
    SOT/6
    $0.80 @1k
    See All Low-Noise Amplifiers (20)

    Diagram
    MAX2640, MAX2641: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  • Application Note 602: RF IC Building Block Solutions for GPS - MAX2641
  • Application Note 620: REP025: Custom-Tuned LNA at 345MHz for Wireless Security System - MAX2640
  • Application Note 697: Silicon Germanium (SiGe) Technology Enhances Radio Front-End Performance - MAX2640
  • Application Note 742: Impedance Matching and the Smith Chart: The Fundamentals - MAX2640, MAX2641
  • Application Note 1759: LNA Tuned for the 433.05MHz to 434.79MHz European ISM Band - MAX2640
  • Application Note 1836: Improving Receiver Sensitivity with External LNA - MAX2640
  • Application Note 1985: LNA Optimized for GPS (REP024) - MAX2641
  • Application Note 2241: MAX2640 LNA Operates at 315MHz for Automotive Keyless Entry Applications - MAX2640
  • Application Note 2875: Three Methods of Noise Figure Measurement - MAX2641, MAX2640
  • Application Note 3447: Complete Stand-Alone GPS Receiver Solution with MAX2742 - MAX2641
  • Application Note 3571: S-Parameter Measurements and Stability Analysis for the MAX2640 LNA - MAX2640
  • Application Note 4044: Tuning the MAX2640 Low-Noise Amplifier (LNA) for a 470MHz to 770MHz ISDB-T Application - MAX2640

    Evaluation Kits
  • MAX2640EVKIT, MAX2641EVKIT

    Design Guides
  • Wireless (PDF)

    Reliability Reports
  • Reliability Report: AEC-MAX2640EUT_A.pdf MAX2640EUT.pdf
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
  • MAX2640–MAX2641 S-Parameter File
  • MAX2640–MAX2641 S-Parameter File

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    MAX2640 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX2640AUT+  
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2640AUT+T    
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2640EUT+  
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2640EUT-T    
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX2640EUT+T    
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2641 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX2641EUT+  
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2641EUT-T    
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX2641EUT+T    
    Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
  • Low-Cost, Low-Noise SiGe LNA

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    Document Ref.: 19-1384; Rev 3; 2007-05-29
    This page last modified: 2007-06-01


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